JPH0948416A - Waste disposal treatment container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a waste disposal treatment container which is lightweight, highly resistant to impact, is hardly damaged even if it is struck against a pointed corner, is chemically resistant and hardly corrodes, by forming by a reaction injection molding using norbornane monomer the container having side walls at least one of which is inclined out at a specific angle to its bottom. SOLUTION: This waste disposal treatment container 1 is obtained by reaction injection molding using a norbornene monomer and has a bottom and four side walls. It is preferable that at least one side wall 2 out of the side walls be inclined at an angle of 30 75 degrees to the bottom and the upper edges of the container and the bottom of it be provided with holes 3 for suspension rings and water removable holes 4, respectively. Examples of the norbornene monomer are dicylopentadiene, a tricyclic monomer such as dihydrodicyclopentadiene, a tetracyclic monomer such as tetracyclododecene, and a peutacyclic monomer such as tricyclopentadiene, which are preferably used because they are easy to obtain, have excellent reactivity, and impart excellent head resistance to a resin molded article to be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste treatment container used in a box-type as a container for storing and transporting waste materials such as waste materials generated in construction such as housing construction.

[0002]

2. Description of the Related Art In the construction work of houses, condominiums, buildings, etc., fragments of various construction materials and interior materials, unnecessary construction materials and parts, and wastes such as packaging materials thereof are generated. Conventionally, an iron box of a size that can be placed on a truck bed is temporarily placed in a corner of the construction site, and the construction waste described above is stored in this iron box, and each time it becomes full,
The boxes were transported by truck to the waste disposal site for processing.

However, the iron box which has been conventionally used is disadvantageous in that it is heavy. Since it is difficult to suspend the iron box and discharge the contents after carrying it to the waste treatment plant,
Waste was manually discharged from the iron box. Even if you wanted to move the temporary storage space a little, heavy equipment such as cranes was necessary. Further, since it is made of iron, it is easy to rust, and there is a problem in that painting is expensive.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the iron box, and is therefore light-weight and has sufficient impact resistance and sharp corners. It is an object of the present invention to provide a waste treatment container which is not easily destroyed even when hit by a chemical, has chemical resistance and does not rust.

[0005]

As a result of intensive studies to solve the above problems, the present inventor has found that a container obtained by reaction injection molding of norbornene-based monomer is lightweight and has sufficient impact resistance. They have found that they have strength, are hard to be broken even when they hit sharp corners, have chemical resistance and do not rust, and have completed the present invention based on these findings.

That is, the present invention is a container formed by reaction injection molding using a norbornene-based monomer, which has a bottom surface and four side walls, and at least one of the side walls forms an angle of 30 to 75 degrees with the bottom surface. The present invention provides a waste treatment container characterized by being inclined outward so that

In the above-mentioned waste treatment container of the present invention,
For the convenience of discharging the contents of the container, the angle between the side wall inclined outward and the bottom surface is preferably 30 to 75 degrees, and more preferably 45 to 60 degrees. If this angle is less than 30 degrees, the horizontal length of the bottom surface with respect to the total length of the container may become too short, and the attitude of the container may become unstable. There is almost no effect of tilting in one direction, making it difficult to discharge the contents of the container.

The reaction injection molded product of the norbornene-based monomer that constitutes the waste treatment container of the present invention has a low specific gravity, for example, a dicyclopentadiene-based polymer has a specific gravity of about 1.04. Easy to transport and handle because it is lighter than FRP (glass fiber reinforced unsaturated polyester resin), which has a specific gravity of about 1.5, which is typical of plastics for large containers, as well as processing containers. Is.

Further, the reaction injection molded product of norbornene type monomer has excellent impact resistance, and the DuPont impact strength is that chopped strand glass fiber is made of unsaturated polyester resin 10
About 10 kgf · cm of FRP by hand lay-up molding compounding 30 parts by weight per 0 part by weight, and about 20 kgf · cm of FRP by molding of SMC (sheet molding compound), for example, 400 kgf · for dicyclopentadiene polymer. It has a value of cm or more. for that reason,
It is not easily broken even if it hits a sharp corner, and there is no risk of damage during transportation and handling.

Further, the reaction injection-molded product of the norbornene-based monomer does not crack in the ring crushing test and restores its original shape when the load is removed. On the other hand, F
RP cracked in the ring crush test and the shape did not recover even when the load was removed. FRP is weak against acids,
Reaction injection molded products of norbornene-based monomers are resistant to acids and alkalis and have excellent chemical resistance.

Since the reaction injection molded product of the norbornene-based monomer is molded by using a mold, it has excellent dimensional accuracy, and there is no variation in work like a hand lay-up molded product,
No pinhole is generated. The thickness of the side wall of the waste treatment container of the present invention is preferably 3 to 20 mm, more preferably 5 to 10 mm. If the thickness of the side wall of the container is less than 3 mm, sufficient rigidity may not be obtained, and if it exceeds 20 mm, not only the container becomes excessively heavy, but also the material is wasted.

The waste treatment container of the present invention is constructed in the shape of a box having a bottom surface and four side walls, but since at least one of the side walls is inclined outward, the container is lifted to make the inclined portion. The container contents can be easily discharged from the container.

The waste treatment container of the present invention is obtained by subjecting a norbornene-based monomer to reaction injection molding. Specific examples of the norbornene-based monomer used in the present invention include, for example, bicyclic compounds such as norbornene and norbornadiene; tricyclic compounds such as dicyclopentadiene and dihydrodicyclopentadiene; tetracyclic compounds such as tetracyclododecene. Pentacycles such as tricyclopentadiene; heptacycles such as tetracyclopentadiene; alkyl substitutions thereof such as methyl, ethyl, propyl and butyl; alkenyl substitutions such as vinyl and allyl; alkylidene substitutions such as ethylidene; Examples thereof include aryl substituents such as phenyl, tolyl, and naphthyl; and substituents having polar groups such as ester groups, ether groups, cyano groups, and halogen atoms. These monomers are
They may be used alone or in combination of two or more. It is preferable to use a polycyclic norbornene-based monomer having three or more rings, since a molded product having excellent heat resistance can be obtained. A tricyclic, tetracyclic, or pentacyclic monomer is preferable from the viewpoints of easy availability, excellent reactivity, and excellent heat resistance of the resulting resin molded product.

In the present invention, it is preferable that the ring-opening polymer produced is a thermosetting type. For that purpose, 10% by weight or more, preferably 30% by weight or more of the monomer used is a crosslinkable monomer. It is preferable that The crosslinkable monomer is
It is a polycyclic norbornene-based monomer having two or more reactive double bonds, and specific examples thereof include dicyclopentadiene, tricyclopentadiene, and tetracyclopentadiene. It should be noted that, as long as the object of the present invention is not impaired, monocyclic cycloolefins such as cyclobutene, cyclopentene, cyclopentadiene, cyclooctene, and cyclododecene that can be subjected to ring-opening copolymerization with a norbornene-based monomer can be used as a copolymer. it can.

In the present invention, it is preferable to use a metathesis catalyst for the polymerization of the norbornene type monomer. The metathesis catalyst is not particularly limited as long as it can ring-opening-polymerize a norbornene-based monomer by reaction injection molding, and known ones can be used. Examples of such metathesis catalysts include halides such as tungsten, molybdenum, and tantalum, oxyhalides, oxides, organic ammonium salts, and the like. The amount of the metathesis catalyst to be used is usually preferably 0.01 to 50 mmol, and more preferably 0.1 to 20 mmol with respect to 1 mol of the monomer used in the whole reaction stock solution. When the amount of the metathesis catalyst used is less than 0.01 mmol based on 1 mol of the monomer, the reaction takes a long time, which may deteriorate the production efficiency. If the amount of the metathesis catalyst used exceeds 50 millimoles per 1 mol of the monomer, the reaction will be too vigorous and thus the resin will be hardened before it is sufficiently filled in the mold, or the catalyst will be more likely to be deposited, so that the reaction stock solution will be easily precipitated. May be difficult to store homogeneously. The metathesis catalyst is usually used by dissolving it in a monomer, but as long as it does not impair the properties of the molded article by reaction injection molding, it is suspended or dissolved in a small amount of a solvent and then used as a monomer. By mixing, the solubility can be increased and precipitation can be prevented.

In the present invention, reaction injection molding can be carried out by using an activator, which is also called a metathesis cocatalyst, together with the metathesis catalyst. The activator is not particularly limited as long as it activates a metathesis catalyst for ring-opening polymerization of a norbornene-based monomer by reaction injection molding, and a known activator can be used. Examples of such activators include alkylaluminum, alkylaluminum halides, alkoxyalkylaluminum halides, aryloxyalkylaluminum halides, and organic tin compounds. The amount of activator to be used is not particularly limited, but is usually 1 to 10 mol per 1 mol of the metathesis catalyst used in the whole reaction stock solution. When the amount of the activator used is less than 1 mol with respect to 1 mol of the metathesis catalyst used in the whole reaction stock solution, the polymerization activity is too low and the reaction may take a long time to deteriorate the production efficiency. When the amount of the activator used exceeds 10 moles based on 1 mole of the metathesis catalyst used in the whole reaction stock solution,
Since the reaction is too vigorous, it may be cured before it is sufficiently filled in the mold. The activator is also usually used by dissolving it in the monomer, but as long as it does not substantially impair the properties of the molded article by reaction injection molding, the monomer is suspended or dissolved in a small amount of solvent. By mixing with, the solubility can be increased and precipitation can be prevented.

In the present invention, if desired, an antioxidant, a filler, a pigment, a coloring agent, a foaming agent, a slidability-imparting agent, a flame retardant, an elastomer, a dicyclopentadiene-based thermopolymerization resin and a hydrogenated product thereof. Various additives can be added to the reaction stock solution to modify the properties of the resulting resin. Examples of the filler include inorganic fillers such as glass, carbon black, talc, calcium carbonate and mica.

In the present invention, an elastomer may be added to the reaction stock solution for the purpose of adjusting the viscosity of the reaction stock solution. Examples of the elastomer used include natural rubber, polybutadiene, polyisoprene, styrene-butadiene copolymer, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, ethylene-propylene-diene terpolymer and the like. Examples include diene elastomers, ethylene-vinyl acetate copolymers, and hydrides thereof. A diene elastomer is preferable, a butadiene elastomer is more preferable, and a block copolymer of styrene and butadiene and cis 1,4-polybutadiene are particularly preferable. By adding these elastomers to the reaction stock solution, the impact resistance of the obtained molded product is also improved.

The reaction stock solution used in the present invention is a norbornene-based monomer, a metathesis catalyst, an activator and other optional components. Each solution was prepared by mixing two or more solutions separately and mixing them so that the body was bulk polymerized, and preventing polymerization of the norbornene-based monomer by only one solution. For example, a liquid composed of a norbornene-based monomer, a metathesis catalyst and an optional component and a liquid composed of a norbornene-based monomer, an activator and an optional component do not polymerize as they are, but they are mixed in a mold. By injecting, the norbornene-based monomer is bulk polymerized in the mold to obtain a molded product.

For workability, the bulk polymerization is usually carried out using two reaction stock solutions, but it is also possible to use three or more reaction stock solutions. After mixing the reaction stock solutions, the norbornene-based monomer is usually contained in each reaction stock solution so that the other components can be sufficiently diffused in the norbornene-based monomer. The other components are preferably dissolved or dispersed in the norbornene-based monomer, but there may be a reaction stock solution containing no norbornene-based monomer. Also,
When the norbornene-based monomer, the metathesis catalyst and the activator are contained in one reaction stock solution, bulk polymerization starts,
Usually, the metathesis catalyst and the activator are not contained in the same reaction stock solution.

In the present invention, the viscosity of the reaction stock solution is not particularly limited, but it is preferably 50 to 2,000 cps, more preferably 100 to 1,000 cps. Even if the viscosity of the reaction stock solution is less than 50 cps,
Even if it exceeds 2,000 cps, it may be difficult to mix the reaction stock solution and inject it into the mold. The reaction stock solution is preferably prepared and handled in an atmosphere of an inert gas such as nitrogen gas for the purpose of preventing deactivation of the metathesis catalyst and the like.

In the present invention, two or more reaction stock solutions are mixed as described above, and the mixed solution is bulk polymerized in a mold having a predetermined shape to obtain a molded product. At this time, the norbornene-based monomer is bulk-polymerized in a state where the arbitrary component is dissolved or dispersed in the norbornene-based monomer. The method of mixing the reaction stock solution is not particularly limited, but a method of mixing instantaneously with a mixing head is generally used. In this case, the containers containing the respective reaction stock solutions serve as separate flow sources. As the mixing head, it is possible to use a collision mixing device, a low-pressure injection machine such as a dynamic mixer or a static mixer, and the like. When using a combination of reaction stock solutions that result in a mixed solution having a pot life at room temperature of several minutes or less for the purpose of suppressing the stickiness of molded products, the time from the mixing of the reaction stock solutions to the end of filling into the mold If the length is too long, the bulk polymerization ends before the end of filling, and a molded product having a predetermined shape cannot be obtained. On the other hand, when using a reaction stock solution which has a pot life of 1 hour or more at room temperature, it may be injected or injected into the preheated mold several times after the reaction stock solution is mixed, or continuously. Since it can be injected in a compact manner, the device can be downsized, it can be operated at low pressure, large and thick molded products can be manufactured, and even when a large amount of filler such as glass fiber is used. Further, it is preferable to use a low-pressure injection machine that makes it possible to uniformly fill the reaction stock solution in the mold by decreasing the injection speed. At the time of reaction injection molding, the two liquids are mixed, then the mixed two liquid is injected into a cavity in a mold, and bulk polymerization is performed in the cavity to obtain a molded product.

The metal mold used for the reaction injection molding does not necessarily have to be an expensive metal mold having high rigidity, and it is not limited to a metal metal mold, and a resin metal mold or a simple mold can be used. The mold temperature is preferably 10 to 150 ° C, more preferably 30 to 120 ° C, and further preferably 50 to 10 ° C.
0 ° C. Mold pressure is usually in the range of 0.1 to 100 kg / cm 2. The polymerization time may be appropriately selected, but is usually 30 seconds to 20 minutes, preferably 5 minutes or less after the reaction solution is injected.

In the present invention, since the temperature rise due to the heat of reaction during bulk polymerization of the norbornene-based monomer is small,
The obtained molded product is not carbonized or deteriorated, and cooling of the mold is usually unnecessary. There is no particular limitation on the material and size of the mold, and in addition to metal molds, synthetic resin molds may be used as long as they have heat resistance to the heat generated during polymerization. it can.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below. (1) A container by reaction injection molding using a norbornene-based monomer, which has a bottom surface and four side walls, and at least one of the side walls is inclined outward. container. (2) The angle between the at least one side wall and the bottom surface is 30 to
The waste treatment container according to (1) above, wherein the waste treatment container has a temperature of 75 degrees, more preferably 45 to 60 degrees. (3) The waste treatment container according to (1) above, wherein a groove for inserting a forklift fork is provided below the bottom surface. (4) The waste treatment container according to (1) above, wherein a hanging ring is provided on an upper edge portion of the container. (5) Side walls other than the at least one side wall are respectively 3 to 1
The container for waste treatment according to (1) above, wherein one container can be dropped into another container and stacked by tilting outwardly by 5 degrees. (6) The waste treatment container according to (1) above, wherein a drainage hole is provided on the bottom surface of the container. (7) Thick-walled strip that goes around the upper edge of the container, vertical and horizontal thick-walled strips that start from the thick edged strip of the container and reach the thick-walled strip through the body of the container, and between the thick-walled strips And a thin plate curved surface for connecting the above. The waste treatment container according to (1) above.

According to the above embodiment (3), loading and unloading of containers from, for example, a truck bed can be efficiently performed by using a forklift.

In the above embodiment (4), 3 to 4
You can hang the container horizontally by using a crane, etc. Further, if the container is suspended by the two suspension wheels located at a position far from the side wall inclined outward, the container is inclined and the container contents are easily discharged from the inclined side wall.

In the above embodiment (5), each side wall is inclined outwardly by, for example, 3 to 15 degrees, preferably 5 to 10 degrees, so that one container is dropped into another container and a plurality of cavities are emptied. It is possible to stack containers in a compact manner (so-called nesting). Further, by arranging the container upper edge portion provided with the hanging ring further outward than the upper edge portions of the respective side walls, the container provided with the hanging wheel can be stacked as it is.

The embodiment (6) deals with the case where the waste treatment container of the present invention is installed outside. It is good to have such holes to drain the rainwater that collects in the container.

In the above embodiment (7), the waste treatment container of the present invention has a basket-like thin plate structure.
By adopting such a structure, it is possible to further reduce the weight of the entire container while maintaining the strength of the container.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment of the waste treatment container of the present invention with reference to the accompanying drawings.

FIG. 1 is a three-view drawing showing a waste treatment container 1 as an example. (A) is a plan view, (B) is a side view, and (C) is a front view. As you can see from the side view,
One of the four sides (2) is sloping outwards,
Holes 3 are formed in the left and right upper edges to pass the suspension ring.
Further, as can be seen from the plan view, a drainage hole 4 is provided on the bottom surface.

In the figure, L is the total length of the container, W is the width, H is the height, and θ is the angle between the bottom surface and the outer inclined side surface 2. In the waste treatment container of this embodiment, the total length L is 2,400 mm,
The width W is 1,100 mm, the height H is 870 mm, and the side surface inclination angle θ is 60 degrees. The side wall thickness of the container is 5 mm
And the weight of the container is about 60 kg.

The waste treatment container 1 of this embodiment is obtained by reaction injection molding of dicyclopentadiene, which is one of the norbornene type monomers, and is lightweight and has sufficient impact resistance. However, even if it hits a sharp corner, it is not easily destroyed, has chemical resistance and does not rust. Since the waste treatment container of this embodiment can be provided with the suspension ring 5, the container can be horizontally suspended by a crane or the like by hooking the suspension ring 5. Further, as shown in FIG. 2, if the container is suspended by the two left and right suspension rings 5 located far from the outer inclined side surface 2, the container is inclined and the container contents are easily discharged. Since the waste treatment container 1 of the present embodiment is provided with the drain hole 4, it is possible to discharge rainwater and the like accumulated in the container.

FIG. 3 is a partial cross-sectional view of the waste treatment container 1 of this embodiment as viewed from the direction of line 3-3 in FIG. 1 (A). As can be seen from FIG. 3, the side walls of the containers are slightly inclined (around 5 degrees) outward, so that a plurality of empty containers can be stacked. A shackle is attached to the upper edge of each container as a suspension ring 5, but since this portion extends further outward than the upper edge of the side wall, the containers are stacked with the shackle attached. be able to.

FIG. 4 is a side view showing an example in which a groove 7 for inserting a fork for a forklift is provided under the bottom surface of the waste treatment container 1. In this example, a skirt 6 having a thickness of 5 mm, which is reinforced with ribs provided inside, is provided below the bottom surface of the container,
The fork groove 7 is defined in the skirt 6.
By providing such a groove 7, for example, loading and unloading of containers from the bed of a truck can be efficiently performed by a forklift.

FIG. 5 is a side view (A) and a front view (B) showing an example of a waste treatment container 1 adopting a cage-shaped thin plate structure. That is, the waste treatment container of this structure has a wall thickness band that goes around the upper edge part of the container, a vertical direction and a horizontal direction that emanates from the wall band of the upper edge part of the container and reaches the thickness band through the container body. It is composed of a thick band and a thin plate having a curved body portion surrounded by the thick bands. By adopting such a cage-shaped thin plate structure, it is possible to further reduce the weight of the entire container while maintaining the strength of the container.

[0038]

EFFECT OF THE INVENTION The reaction injection molded product of the norbornene-based monomer constituting the waste treatment container of the present invention has a small specific gravity and is lightweight, so that it is easy to carry and handle. Also, since it has excellent impact resistance, it is not easily broken even when it hits a sharp corner, and is not easily damaged during transportation and handling. Furthermore, reaction injection molded products of norbornene-based monomers have excellent chemical resistance,
Strong against acid and alkali. Therefore, it is possible to obtain a waste treatment container that is lightweight, has sufficient impact resistance, is not easily broken even when hitting a sharp corner, has chemical resistance, and does not rust.

The waste treatment container of the present invention is formed in a box shape having a bottom surface and four side walls, but at least one of the side walls is inclined outward by 30 to 75 degrees, so that the contents of the container are discharged. Is easy. This feature is particularly effective when the container is suspended by two left and right suspension rings located far from the inclined side wall and the container is inclined with the inclined side wall facing downward to discharge the contents.

Examples of the waste treatment container of the present invention include those in which the side walls other than the above-described outwardly inclined side walls are slightly inclined outward. By sloping each side wall in this way, it becomes possible to drop one container into another container and stack a plurality of empty containers in a compact manner for collective transport or storage.

In the waste treatment container of the present invention, since the groove for inserting the forklift fork is provided under the bottom surface of the container, for example, the loading and unloading of the container from the loading platform of the truck can be efficiently performed. be able to.

In the waste treatment container of the present invention, a thick band that goes around the upper edge of the container, and vertical and horizontal thick bands that start from the thick band of the upper edge of the container and reach the thick band through the body of the container Also, by adopting a cage-shaped thin plate structure composed of thin curved surfaces that connect the respective thick bands, the weight of the entire container can be further reduced while maintaining the strength of the container.

[0043]

[Brief description of drawings]

FIG. 1 is a three-view drawing showing a waste treatment container as an example.

FIG. 2 is an explanatory diagram showing a state in which the waste treatment container shown in FIG. 1 is suspended by a suspension ring.

FIG. 3 is a partial cross-sectional view showing a state in which two waste treatment containers shown in FIG. 1 are stacked.

FIG. 4 is a side view showing an example of a waste treatment container provided with a groove for inserting a forklift fork under the bottom surface.

FIG. 5 is a side view and an elevation view showing an example of a waste treatment container that employs a cage-shaped thin plate structure.

[Explanation of symbols]

 1 ... Waste treatment container 2 ... Inclined side wall 3 ... Hole for suspension ring at upper edge of container 4 ... Drainage hole 5 ... Suspension ring 6 ... Skirt 7 ... Fork groove

Claims (3)

[Claims] 1. A container by reaction injection molding using a norbornene-based monomer, which has a bottom surface and four side walls, and at least one of the side walls has an angle of 30 to 75 degrees with the bottom surface. A waste treatment container characterized by being inclined outward. 2. The waste treatment container according to claim 1, wherein a suspension ring is provided on an upper edge portion of the container. 3. A container according to claim 1 or 2, wherein one of the side walls other than the at least one side wall is slightly inclined outward so that one container can be dropped into another container and stacked. Waste disposal container.